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<p>The magnetocaloric effect(MCE) of the (Fe<sub>0.5</sub>Cu<sub>0.5</sub>)<sub>60</sub>Zr<sub>40</sub> alloy has been investigated by phenomenological model, estimating magnetic entropy change (∆S<sub>M</sub>) and heat capacity change. The results indicate that MCE of (Fe<sub>0.5</sub>Cu<sub>0.5</sub>)<sub>60</sub>Zr<sub>40</sub> alloy can be controlled and tuned by several magnetic fields. Furthermore, the study of ∆S<sub>M</sub> curves predicts how to expand the temperature range for exploiting (Fe<sub>0.5</sub>Cu<sub>0.5</sub>)<sub>60</sub>Zr<sub>40</sub> in magnetic refrigeration. ∆S<sub>M</sub> reaches a peak of about 0.5&#xa0;J/Kg&#xa0;K at 112&#xa0;K with δT<sub>FWHM</sub> = 227&#xa0;K and RCP = 102&#xa0;J/Kg under 5&#xa0;T applied field variation. (Fe<sub>0.5</sub>Cu<sub>0.5</sub>)<sub>60</sub>Zr<sub>40</sub> alloy has a potential application for magnetic refrigerants over a wide temperature range, especially its high electrical resistivity leads to decreased eddy current losses, covering a significant range of temperature between 0&#xa0;K and room temperature. Therefore, these advantages make (Fe<sub>0.5</sub>Cu<sub>0.5</sub>)<sub>60</sub>Zr<sub>40</sub> alloy potentially practical for efficient cooling devices.</p>

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Ferromagnetic solid state refrigeration with tunable magnetic characteristics for green energy magnetic device

  • 期刊论文

  • 发表日期：

    2025年4月14日

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  • Mahmoud A. Hamad,
  • Tahani R. Aldhafeeri,
  • Hatem R. Alamri,
  • Mohamed E. Harb

摘要

The magnetocaloric effect(MCE) of the (Fe0.5Cu0.5)60Zr40 alloy has been investigated by phenomenological model, estimating magnetic entropy change (∆SM) and heat capacity change. The results indicate that MCE of (Fe0.5Cu0.5)60Zr40 alloy can be controlled and tuned by several magnetic fields. Furthermore, the study of ∆SM curves predicts how to expand the temperature range for exploiting (Fe0.5Cu0.5)60Zr40 in magnetic refrigeration. ∆SM reaches a peak of about 0.5 J/Kg K at 112 K with δTFWHM = 227 K and RCP = 102 J/Kg under 5 T applied field variation. (Fe0.5Cu0.5)60Zr40 alloy has a potential application for magnetic refrigerants over a wide temperature range, especially its high electrical resistivity leads to decreased eddy current losses, covering a significant range of temperature between 0 K and room temperature. Therefore, these advantages make (Fe0.5Cu0.5)60Zr40 alloy potentially practical for efficient cooling devices.